Install NodeJS 6 in CentOS8

[梵总]

By the time of this writing, the latest NodeJS is V14.3.0, so there is no meaning to install Node6, which is no longer supported.

But I still wanted to give it a try, by following those commands:

# Install Node.js 6.x repository
curl -sL https://deb.nodesource.com/setup_6.x | bash -

# Install Node.js and npm
apt-get install -y nodejs

Unfortunately, I got not just warnings, but it's failed to installed.
Then I gave up, and tried to install the higher version of NodeJS by following this tutorial:
https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-centos-8

But I stuck at this command:

sudo dnf module list nodejs

It throw the errors:

Failed to download metadata for repo 'nodesource'

Believe it or not, it's not easy to find out the solution from Google. Finally, I figured it out at: https://www.cyberciti.biz/faq/centos-redhat-fedora-linux-remote-yum-repo-configuration/

But in my case, I need to remove the repo, I installed when I tried to install NodeJS6, which are:

cd /etc/yum.repos.d/
sudo rm nodesource-el8.repo

cd /etc/pki/rpm-gpg/
sudo rm NODESOURCE-GPG-SIGNING-KEY-EL

sudo yum clean all

Happy Installing!